A very false and usually pretentious person who adds people to their Facebook friends list regardless of whether they know and like them or not, in a pathetic attempt to boost themselves up a "social network hierarchy" that exists only in their heads. Essentially its no more then a desperate plea to feel loved, needed and important.

"She's got like a thousand friends on facebook, man what a fakebooker."

"A thousand friends on Facebook?! Not one would take a bullet in the ass for him though! What a fakebooker!"